.maintain{
    width: 500px;
    height: 320px;
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -250px;
    margin-left: -250px;
}
.maintain img{
    width: 500px;
    height: 243px;
}
.maintain p{
    width: 100%;
    height: 77px;
    line-height: 77px;
    text-align: center;
    font-size: 24px;
    color: #00bfb4;
    background: url(/assets/img/maintain_pic_bg.png) no-repeat center bottom;
    background-size: 80% auto;
}
.safeguard{
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: url(/assets/img/maintain_bottom.png) no-repeat center bottom;
    background-size: 100% auto;
}